Handy sprinter Time To Plunder will have to improve sharply at the Gold Coast if he is to join trainer Liam Birchley's annual raid on the Melbourne carnival.

Time to Plunder will be having his third start this campaign in Saturday's Broadbeach Junior AFL Open (1200m).

Birchley's regular spring forays have reaped wins in Melbourne in recent years with horses such as Missy Longstocking, Liesele, Emmalene and Whateverwhenever.

He is putting together this year's Melbourne team and had Time To Plunder pencilled in for the greys' race at Flemington.

"He will want to improve a bit on his last start or it would be a waste of time taking him," Birchley said about Time To Plunder's last of nine in an open handicap at Doomben.

"He was a bit slow to go but he didn't do much after that."

Birchley also hopes to take Gun Case south after the horse's recovery from an injury discovered after his first loss at Doomben last month.

"He has had a week on the water walker and a couple of weeks in the paddock," Birchley said.

"We will jump him out or trial him next week and if he is OK he will probably go south."

Birchley is also looking to take two-year-old Syn City to Melbourne for an Inglis sale graduate race at Moonee Valley on October 25.

Syn City won the first Queensland juvenile race of the season at Toowoomba last week.

Meanwhile, bookmakers have installed the Les Ross trained Frequendly as favourite for the first metropolitan fillies two-year-old race of the season at the Gold Coast.

By Sequalo who died last month, Frequendly beat Syn City easily in an Eagle Farm barrier trial last month.